<!DOCTYPE html>
<html lang="zh-hans">
<head>
    <meta charset="UTF-8">
    <title>按钮特效</title>
    <style>
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        a {
            margin-left: 100px;
            margin-top: 100px;
            display: block;
            width: 120px;
            height: 60px;
            line-height: 60px;
            color: #fff;
            background-image: linear-gradient(to right, #c6ffdd, #FBD786, #f7797d);
            text-align: center;
            border-radius: 14px;
            box-shadow: 0 20px 0 rgba(0, 0, 0, .7);
            user-select: none;
            cursor: pointer;
            transition: .3s;
        }

        a:active {
            box-shadow: 0 10px 0 rgba(0, 0, 0, .7);
            transform: translateY(10px);
        }
    </style>
</head>
<body>
    <a>点击发送</a>
</body>
</html>